Belle Fourche, SD Radon Mitigation and Testing

Q: What is the average radon level in Belle Fourche, SD?

Based on 1 user-submitted tests, the average radon level is 20.00 pCi/L.

Q: What EPA Radon Zone is Belle Fourche in?

Belle Fourche is in Butte County, EPA Zone 2.

Q: How much does radon mitigation cost in Belle Fourche?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Avg: 20.00 pCi/L

Butte County

EPA Zone 2

1 user test

Belle Fourche in Butte County shows concerning radon levels with a reading of 20.0 pCi/L, five times higher than the EPA's 4.0 pCi/L action threshold. This western South Dakota community sits near the Black Hills region where uranium-bearing formations in underlying bedrock contribute to elevated radon production. Residents of zip code 57717 should prioritize radon testing and mitigation given this significantly elevated reading.

20.00

pCi/L average

Above EPA Action Level

Based on 1 user-submitted radon test for homes in Belle Fourche, SD. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Belle Fourche, SD Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Belle Fourche, SD Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Belle Fourche, South Dakota Radon Levels

User-submitted radon test readings from homes in the Belle Fourche area.

Radon Level	City	Home Age	Foundation	Submitted
20 pCi/L	Belle Fourche, SD	51-99 Years	Full Basement	Mar 2019

Have a radon test result for Belle Fourche? Submit your reading to help other homeowners.

Belle Fourche Radon Facts

Key details about the radon risk profile for Belle Fourche and the 57717 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Butte County, SD

Zip Code

57717

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

20.00 pCi/L

User Tests Submitted

Belle Fourche and the 57717 zip code are located in Butte County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Belle Fourche, SD

What is the average radon level in Belle Fourche, SD?

Based on 1 user-submitted test, the average radon level in Belle Fourche is 20.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.

What EPA Radon Zone is Belle Fourche in?

Belle Fourche and the 57717 zip code are in Butte County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

How much does radon mitigation cost in Belle Fourche?

Radon mitigation in Belle Fourche typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.

Should I test for radon if I'm buying a home in Belle Fourche?

Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.

Most Active Radon Markets in South Dakota

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Spearfish	7.75 pCi/L	4
Rapid City	10.50 pCi/L	2
Aberdeen	8.50 pCi/L	2
Sioux Falls	6.00 pCi/L	2
Watertown	6.00 pCi/L	2